郑州方管价格或震荡偏弱运行较昨日无变化4…方管今日郑州市场方管最新价格行情主流走势表现平稳运行，其中友发无垫杠方管30*30*2.5 Q195-Q235的价格：4400元/吨，价格平稳；友发无垫杠方管40*40*2.5 Q195-Q235的价格：4300元/吨，价格较昨日无变化；友发无垫杠方管50*50*2.5 Q195-Q235的价格：4300元/吨，维持昨日价格。The latest price trend of square t…

无缝方管是由无缝钢管冷拔挤压成型的方型钢管，并非直出的焊接方管，而焊接方管也称焊管，是用钢板或带钢经过卷曲成型后焊接制成的方管。焊接方管生产工艺简单，生产效率高，品种规格多，设备资少， 常用材质为：Q235A，Q235C。

Seamless square pipe is a square pipe formed by cold-drawing and extrusion of seamless steel pipe, not a straight welded square pipe. Welded square pipe, also known as welded pipe, is a square pipe made of steel plate or strip steel after curling and forming. Welded square pipe has the advantages of simple production process, high production efficiency, many varieties and specifications, and less equipment. Commonly used materials are Q235A and Q235C. 

一、焊接方管是一种空心方形截面型钢方管,也称为空心冷弯型钢.它是以热轧或冷轧带钢或卷板为坯料经冷弯曲加工成型后再经高频焊接制成的方形截面形状尺寸的型钢。

1. Welded square pipe is a hollow square section steel square pipe, also known as hollow cold-formed steel. It is a square section shape and size steel made by hot-rolled or cold-rolled strip or coil plate after cold bending processing and high frequency welding. 

厚壁方管除壁厚增厚外情况,其角部尺寸和边部平直度均达到甚至超过电阻焊冷成型方管的水平，R角的大小一般是壁厚的2倍-3倍之间.也可以根据客户的需要，生产客户所需大小的R角方管；

In addition to wall thickness, the corner size and flatness of thick-walled square tubes reach or even exceed the level of resistance welding cold-formed square tubes. The size of R angle is generally between two and three times of wall thickness. The R angle can also be manufactured according to the needs of customers. 

二、无缝方管是一种具有中空截面、周边没有接缝的长条钢材.是用无缝管通过模具的4面挤压形成的方管，方管具有中空截面,大量用作输送流体的管道.主要应用于液体输送,液压支架,机械结构,中低压.高压锅炉管,热交换管,气体.石油等行业.他比焊接的更坚固，不会出现裂缝。

2. Seamless square pipe is a kind of long steel with hollow section and no seams around it. It is a square pipe formed by extrusion of seamless pipe through four sides of the die. The square pipe has hollow section and is widely used as a pipeline for conveying fluid. It is mainly used in liquid conveying, hydraulic support, mechanical structure, medium and low pressure, high pressure boiler pipe, heat exchange pipe, gas, oil and other industries. It is stronger than welding and will not. Cracks appeared. 

西安方管持续保持暂稳趋势厂家到货速度较慢…方管本周西安方管市场持续保持暂稳趋势，市场报价坚挺。据贸易商反馈，近期各大方管厂家发货量都不是很多，八钢发货量下降了近一半，到货量下降，包钢发货 量也是下降较多。近期，方管厂家到货速度较慢，库存方面，大户保持在7000吨左右，合计总库存在1.9万吨，比上周下降0.11万吨，库存下降速度加快。据方管厂家反映，近期天气较… 南京镀锌方管市场将弱势下行运行整体市场情…方管本周南京镀锌方管市场价格暂稳，整体成交较上周有所好转，本周出货量较稳定。周初起，期货、原料等上游市场价格趋稳， 整周处于快速下行状态，至今日午盘期螺跌破3300。与上周相比，本周期货以及原材料均有下跌，整体市场心态不佳。从南京部分方管厂家了解到，当地镀锌方管价 格保持稳定，市场交投无明显变化。 方管价格方…